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Finding the Fourth Proportional to 7,251.50, 10,879.14 and 2,807.84

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Solution

The fourth proportional to 7,251.50, 10,879.14 and 2,807.84 is: 4,212.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,251.50 : 10,879.14 = 2,807.84 : x
  2. Step 2: Convert to fraction form
    7,251.50/10,879.14 = 2,807.84/x
  3. Step 3: Cross multiply
    7,251.50x = 10,879.14 × 2,807.84
  4. Step 4: Simplify right side
    7,251.50x = 30,546,884.46
  5. Step 5: Solve for x
    x = 30,546,884.46/7,251.50
  6. Step 6: Final answer
    x = 4,212.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.